diff --git a/lms/models/lti_role.py b/lms/models/lti_role.py
index fb8da72d2b..dd66a73d11 100644
--- a/lms/models/lti_role.py
+++ b/lms/models/lti_role.py
@@ -20,6 +20,7 @@ class RoleType(StrEnum):
     LEARNER = "learner"
     ADMIN = "admin"
     NONE = "none"
+    TEST_USER = "test_user"
 
 
 @unique
@@ -168,6 +169,7 @@ class _RoleParser:
         "SysSupport": RoleType.ADMIN,
         "TeachingAssistant": RoleType.INSTRUCTOR,
         "User": RoleType.LEARNER,
+        "TestUser": RoleType.TEST_USER,
     }
 
     @classmethod
diff --git a/tests/unit/lms/models/lti_role_test.py b/tests/unit/lms/models/lti_role_test.py
index ed255ab2cf..e8877f8e81 100644
--- a/tests/unit/lms/models/lti_role_test.py
+++ b/tests/unit/lms/models/lti_role_test.py
@@ -193,7 +193,7 @@ class TestLTIRole:
             ),
             (
                 "http://purl.imsglobal.org/vocab/lti/system/person#TestUser",
-                RoleType.LEARNER,
+                RoleType.TEST_USER,
                 RoleScope.SYSTEM,
             ),
         ],